/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.camunda.bpm.engine.runtime;

/**
 * <p>A ProcessElementInstance is an instance of a process construct 
 * such as an Activity (see {@link ActivityInstance}) or a transition 
 * (see {@link TransitionInstance}).
 * 
 * @author Daniel Meyer
 *
 */
public interface ProcessElementInstance {

  /** The id of the process element instance */
  String getId();

  /** The id of the parent activity instance. */
  String getParentActivityInstanceId();
  
  /** the process definition id */
  String getProcessDefinitionId();
  
  /** the id of the process instance this process element is part of */
  String getProcessInstanceId();

}
